Thank you, brian ross. And just three weeks after the boston bombing, the fbi says they've broken up another terror plot, this one, rentedly an american with ties to an american militia group. So who was his target? Abc's senior justice correspondent pierre thomas on that case. Reporter: The fbi is describing this man has a potential domestic terrorist. Buford rogers was arrested at his mobile home, two hours west of minneapolis late last week, after authorities allegedly found pipe bombs, molotov cocktails for starting fires, and a romanian ak assault rifle. Particularly if it's modified to automatic, if that's the case, you can kill dozens of people in a minute or two. Reporter: Fbi and local police say they moved quickly because he was planning attacks against local residents, possibly including government officials. His family says the charges are bogus. We've never done a violent thing like that in our lives. Reporter: On his facebook page two years ago, he spoke of a coming war with the government allegedly writing nwo, new world order, has taken all of freedoms, the right to bear arms. Together we can fight back. They won't take me down without a fight. Pierre thomas, abc news, washington.

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Boston Bombing Investigations Focusing on Wife of Older Brother

Questions raised as to how much wife of suspected bomber really knew.

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